[amp_mcq option1=”To provide adequate bond stress” option2=”To resist tensile stresses” option3=”To impart initial compressive stress in concrete” option4=”All of the above” correct=”option4″]
The correct answer is D. All of the above.
Reinforcement in pre-stressed concrete is used to provide adequate bond stress, resist tensile stresses, and impart initial compressive stress in concrete.
- Adequate bond stress is required to ensure that the reinforcement and concrete act together as a unit.
- Tensile stresses are caused by bending, shear, and other loads. Reinforcement is used to resist these stresses and prevent the concrete from cracking.
- Initial compressive stress is imparted to the concrete by pre-stressing. This compressive stress helps to offset the tensile stresses that are caused by loads, and it also makes the concrete more resistant to cracking.
Without reinforcement, pre-stressed concrete would be very weak and would not be able to withstand the loads that it is designed to carry.